Guard.



D. C.'WEAVER. GUARD APPLICATION FILED OCT. 20. 1916.

1 ,235,403. Patented July 31, 1917.

2 SHEETSSHEET I.

atfoznw D. C. WEAVER.

GUARD.

APPLICATION FILED OCT. 20. 1816.

1 35,403; Patented July 31, 1917.

2 SHEETS-SHEET 2.

TTED %TATE% PATENT @FFTQE.

DAVID CLARK WEAVER, or SALEM, OREGON, nssieiion 0E own-HALE ro susaiv J.

WEAVER, or SALEM, OREGON.

GUARD.

Specification of Letters Patent.

Patented July 31, 1917;

To all whom it may concern Be it known that I, DAvID C. WEAvER, acitizen of the United States, residing at Salem, in the county of Marionand State of Oregon, have invented new and useful In1- provements inGuards, of which the following is a specification.

The invention relates to an improved guard designed for use in woodworking machines, particularly with planers of the type known as jointeror bur planers.

The improved guard is designed to cover and protect the knives at alltimes, except when in actual use, whereby it is impossible for theworkman to become injured by the knives.

The invention in the preferred form of de tails will be described in thefollowing specification, reference being had particularly to theaccompanying drawings, in which Figure l is a plan view showing the planing machine with the improved guard applied thereto.

Fig. 2 is a side elevation of the same.

Fig. 3 is a side elevation from the opposite side.

Fig. at is a perspective view of the guard proper and connection.

Fig. 5 is a plan view of the guard extended.

Fig. 6 is a transverse section through the guard.

Referring particularly to the accompanying drawings, the improved guardcomprises a metallic member 1. the side edges of which are divergentfrom the supported end of said member to provide a comparatively wideoperative end :2. The under side of the member 1 is recessed at 3. saidrecess opening through the outer side of the member and through theinner end providing an abutting wall 4 at the inner side of the member,as shown. An adjusting plate 5 is movably fitted in the recess 3, andadjustable laterally with relation to the main memher 1, being formedwith a series of open ings 6 adapted to cooperate with the pin 7depending from the main member, whereby the plate may be held atvariable lateral adjustments with respect to the main member, for apurpose which will later appear.

The guard including a main member 1 and an adjusting plate 5 isrotatably supported upon a shaft 8 having a reduced upper end 9 to seatin registering openings 10 in the adjusting plate and main member, theopening in the plate being formed with lateral recesses 11 to receivethe cross pin 12 mounted in the shaft, whereby the shaft and plate arefixed against independent movement. A. set screw 13 passes through anopening in the top of the main member and is threaded into the end ofthe shaft to secure the parts against endwise separa tion.

The shaft 8 is rotatably mounted in the opening 14 formed in the top 15of the planer in advance of the planing knives 16, so that the operativeend of the guard overlies and protects said knives being held againstfixed guide 17 through the medium of an operating means, including a rod18 removably inserted in the opening 19 formed transverse the shaft andextending transverse the planer top beneath the same. The rod is headedso that it may be freely removed from the shaft in one direction, theopposite end of the rod being formed with a notch 20 to receive one endof the cable 21, the opposite end of which is connected to the weight 22passing over the guide pulley 23 secured to the planer. The weightoperates to exert sufiicient pull upon the rod 18 to maintain the guardoverlying the knives and against the fixed guide.

In operation, the guard will efiectively protect the knives, maintainingthem covered except during actual use, it being understood that thematerial to be operated upon is introduced alongside the edge of theguard and displaces the same as it is advanced to be engaged by theknives. When the guide 17 has been adjusted to give a wider cut theguard may be correspondingly increased in size by adjusting the plate 5with relation to the main member as heretofore described.

For convenience, in dismantling the guard, I provide hook 25 adjacentthe weight connection, so that the latter may be suspended, the cableend removed from the rod 18, the latter removed from the shaft openingand the guard and shaft together removed from the planer top.

What is claimed is 1. A guard for planer knives operating through aplaner table, comprising a vertical shaft rotatably mounted in the tableremote from the knives, means for maintaining rotative tension on theshaft in one direction, a guard for the knives including a main platearranged to cooperate with the shaft, with interlocking means on theplate and shaft to hold the plate against in-, dependent rotary movementon the shaft while permitting free longitudinal movement of the plate inone direction, a second plate mounted for rotative movement on theshaft, the ends of the plates remote from the shaft and adjacent theknives being arranged for relative adjustment and locking of the plates.

2. A guard for planing knives operating through a table comprising ashaft mounted for rotative movement in the table remote from the knives,an arm extending from the shaft, a Weight connected to the arm tomaintain rotative tension on the shaft, and

neesnoe a guard comprising a main plate having a hearing to engage theshaft, said bearing being formed with a slot to engage a pin carried bythe shaft to fix the main plate on the shaft, a second platesuperimposed on the main plate and mounted on the shaft for freerotative movement, the main plate remote from the shaft being formedwith a series of apertures, and a pin carried by the second plate toengage in any one of the apertures in the main plate to adjust theplates with respect to each other.

In testimony whereof I affix my signature in presence of two witnesses.

DAVID CLARK XVEAVER. Witnesses:

R. H. RUTHERFORD, 'lnno. LENGELE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Eatents, Washington, 33. G.

